👉 The term "subfoundation" is a concept in the field of mathematics and computer science, specifically related to the study of mathematical structures that are not complete or self-contained. The term was first introduced by Peter G. Mitchell in his 1984 paper "Subfiniteness in Mathematics: A Survey." Subfiniteness refers to the idea that a set of objects can be made into an infinite set, but it is incomplete and does not contain all possible elements. The concept of
